[frozen@localhost first_app]$ gem install sqlite3 -v '1.3.9' ERROR: While executing gem ... (Errno::EACCES) Permission denied - /home/frozen/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/gems/sqlite3-1.3.9/.gemtest
小伙看你根骨奇佳，潜力无限，来学PHP伐。
sudo chmod 777 /home/frozen/.rvm
sudo chown -R frozen /home/frozen/.rvm
sudo chmod 777 /home/frozen/.rvm
sudo chown -R frozen /home/frozen/.rvm